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US 5,180,702 AGranted
Metal halide catalyst, method of producing the catalyst, polymerization process employing the catalyst, and polymer produced by the polymerization process
AssigneePhillips Petroleum Company
InventorTed M. Pettijohn
Life of this patent
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Abstract
A polymerization catalyst is formed by producing a solution of a Group IIA or Group IIB halide and an alcohol; contacting the solution with an organometallic compound to form a soluble complex; and contacting the soluble complex with a halide ion exchanging source. An ester or an anhydride can also be combined with the halide solution or the soluble complex. The catalyst thus produced can be combined with an organometallic cocatalyst.
Claims18
A process for producing a polymerization catalyst comprising:
- (1) contacting at least one metal halide selected from the halides of Group IIA and Group IIB metals, with at least one alcohol to form a metal halide solution;
- (2) contacting the solution of (1) with an organometallic compound to form a soluble complex wherein the metal in the organometallic compound is selected from Groups IA, IIA, IIB, and IIIA;
- and
- (3) contacting the soluble complex of (2) with a halide ion exchanging source comprising a group IVA or Group VA transition metal halide to form said catalyst.
1 more element
A process for producing a catalyst system comprising:
- (1) contacting magnesium dichloride with 1,2-octanediol to form a magnesium dichloride solution;
- (2) contacting the solution of (1) with diethylaluminum chloride to form a soluble complex;
- (3) contacting the soluble complex of (2) with titanium tetrachloride to form a solid catalyst;
- and
- (4) contacting said catalyst with triethylaluminum to produce a catalyst system;
- wherein said 1,2-octanediol is present in an amount in the range of 3 to 15 moles of alcohol per mole of magnesium dichloride;
- said diethylaluminum chloride is present in an amount in the range of 3 to 30 moles of diethylaluminum chloride mole of magnesium dichloride;
- said titanium tetrachloride is present in an amount in the range of 0.1 to 10 moles of titanium tetrachloride per mole of magnesium dichloride;
- said triethylaluminum is present in the range of 1 to 50 moles of triethylaluminum per mole of titanium tetrachloride;
- wherein said contacting in step (1) is carried out at a temperature of from 20.degree. to 75.degree. C.;
- and a pressure of 0 to 50 psig;
- for a time within the range of from 5 min to 10 hrs;
- said contacting in step (2) is carried out at a temperature of from 20.degree. to 75.degree. C.;
- and a pressure of 0 to 50 psig;
- for a time within the range of from 5 min to 10 hrs;
- and
- said contacting in step (3) is carried out at a temperature of from 0.degree. to 100.degree. C.;
- and a pressure of 0 to 50 psig;
- for a time within the range of from 5 min to 10 hrs.
16 more elements
Dependencies are inferred from the claim text.